517 results about "Antifouling coating" patented technology

Disclosed in the present invention are a fluorosilicone-modified low-surface-energy antifouling coating and a preparation method therefor. The coating comprises the following components in parts by weight: 11-15 parts of butyl acrylate, 3-4 parts of dodecafluoroheptyl methacrylate, 3-4 parts of vinyl-terminated polydimethylsiloxane, 3-4 parts of 2-hydroxy-4-acryloyloxybenzophenone, 30-38 parts of methyl isobutyl ketone, 0.15-0.25 parts of azobisisobutyronitrile, 0.1-0.2 parts of sodium hydroxide, 2-3 parts of modified titanium dioxide nanoparticles, and 0.5-1.5 parts of 3-aminopropyltriethoxysilane. In the present invention, vinylpentamethyldisiloxane reacts with decamethylcyclopentasiloxane to prepare vinyl-terminated polydimethylsiloxane; a titanium dioxide precursor is mixed with polydopamine nanoparticles for modification to prepare modified titanium dioxide nanoparticles; and then the components above are mixed to prepare the fluorosilicone-modified low-surface-energy antifouling coating. The coating has low surface energy and good adhesion and ultraviolet resistance.

The invention discloses a water-based multi-layer degradable self-polishing ship antifouling coating system and a preparation method thereof, and belongs to the field of marine anticorrosion and antifouling materials. The system is composed of a zinc-rich primer, a modified epoxy intermediate paint and a functionalized finish paint. The finish paint takes polyhydroxyalkanoate as a matrix, and integrates a self-stratification modifier capable of forming a silicon-rich top layer during curing and a latent dual-curing system capable of realizing normal-temperature curing through a synergistic effect. According to the present invention, the mixing mechanism of dynamic self-polishing and static fouling release is adopted, and the innovative curing technology is combined, such that the long working life, the excellent mechanical property and the long-acting antifouling ability are achieved. The drawing adhesive force of the system is not lower than 7.9 MPa, and the environment-friendly requirements that the content of volatile organic compounds is smaller than or equal to 50 g / L, and the content of free diisocyanate monomers is smaller than or equal to 0.1 wt% are met.

This invention belongs to the field of marine antifouling, and specifically relates to a transparent, self-lubricating organosilicon hybrid antifouling coating with a negatively charged surface and its preparation method. The antifouling coating is obtained by a sol-gel reaction of modified nanocellulose, hydroxy acid, and functional fluorine / siloxane monomers; the mass ratio of the hydroxy acid to the modified nanocellulose is 10–100:1; the mass ratio of the functional fluorine / siloxane monomer to the modified nanocellulose is 10–300:1. This invention, based on a multi-element green antifouling strategy, constructs a material surface with negative charge, self-lubrication, and low surface energy. The prepared antifouling coating exhibits excellent transparency, mechanical properties, and static antifouling performance. This antifouling coating is environmentally friendly and has broad application prospects in the field of marine antifouling.

The invention relates to the technical field of marine antifouling materials, in particular to a modified polyurethane marine antifouling coating based on a metal pyridine structure and a preparation method. According to the modified polyurethane marine antifouling paint based on the metal pyridine structure, polyhydric alcohols and diisocyanate monomers with different molecular weights are subjected to condensation polymerization to obtain a polyurethane prepolymer; then reacting a diaminopyridine monomer or a dihydroxypyridine monomer with a metal ion compound to obtain a chain extender with a metal pyridine structure; finally, the marine antifouling paint is prepared through the reaction between the terminal amino or hydroxyl of the metal pyridine structure chain extender and the terminal isocyanate group of the polyurethane prepolymer, the metal pyridine structure is introduced into polyurethane, the mechanical performance of the marine antifouling paint is enhanced, the marine antifouling paint is endowed with the antibacterial effect through metal ion release, and the service life of the marine antifouling paint is prolonged. Adhesion and growth of marine fouling organisms can be effectively inhibited, and an efficient and durable solution is provided for development of a polyurethane marine antifouling coating.

The invention discloses a modified organic silicon marine antifouling paint and coating based on dynamic crosslinking of boric acid ester, and the modified organic silicon marine antifouling paint based on dynamic crosslinking of boric acid ester comprises the following components in parts by weight: 20-40 parts of a component A; 4-10 parts of a component B; 1-3 parts of a component C; wherein the component A comprises hydroxyl-terminated polydimethylsiloxane, borate modified polysiloxane, an auxiliary agent, a pigment filler and a first solvent, the component B comprises a curing agent and a second solvent, and the component C comprises a catalyst and a third solvent. Hydrolysis of boric acid ester bonds increases the hydrogen-bond interaction between the coating and a base material, and meanwhile, ether groups are introduced to strengthen the hydrogen-bond interaction effect, so that the coating can be firmly adhered to the intermediate paint in a seawater soaking environment.

The invention relates to a coral cellulose / photo-thermal material composite antifouling coating and a gradient curing method thereof, and aims to solve the problems of environmental pollution, short antifouling period, lack of environmental response capability and the like in the traditional ship antifouling technology. Through the composite design of the coral cellulose and the photo-thermal material and in combination with a layered curing process, long-acting antifouling and mechanical property strengthening of the coating in a marine environment are realized.

The invention discloses rosin modified zinc acrylate self-polishing resin, an antifouling paint containing the resin and a synthesis method. Firstly, under the action of an initiator, an acrylic prepolymer is synthesized from an acrylic monomer through a polymerization reaction; then, under the action of zinc oxide and benzoic acid, rosin resin is grafted to the side chain of the acrylic prepolymer, and zinc acrylate resin with the side chain containing rosin is obtained; and mixing, dispersing and grinding the rosin modified zinc acrylate resin, an anti-fouling agent, pigment filler, an auxiliary agent and a solvent to obtain the self-polishing anti-fouling paint based on the rosin modified zinc acrylate resin. The prepared rosin modified zinc acrylate self-polishing resin is high in polymerization degree, concentrated in molecular weight distribution and good in plasticity and flexibility, and the self-polishing antifouling paint based on the rosin modified zinc acrylate self-polishing resin comprises a cuprous oxide main antifouling agent and a composite organic antifouling agent and has the stable copper ion seepage rate and the good antifouling effect.

The invention provides a simulated aging test method for an antifouling coating. The simulated aging test method comprises the following steps: S1, constructing a natural aging performance model of the antifouling coating; s2, constructing an accelerated aging model of the antifouling coating and acquiring an acceleration ratio N of natural aging to accelerated aging; s3, based on an accelerated aging model, acquiring an acceleration period Mi corresponding to a critical threshold R (temporary i) of a copper ion exudation rate, wherein the predicted life Lp (temporary i) of the antifouling coating is equal to Mi * N; and S4, based on a natural aging model, obtaining a predicted copper ion exudation rate R < pre-i > corresponding to the predicted life Lp < pre->, judging whether R < pre-i >-R < critical i > / R < critical i > is less than or equal to 10%, if so, outputting a near threshold R < critical i > and the predicted life Lp < pre-i >, and if not, adjusting the critical threshold of the copper ion exudation rate to R < critical i + 1 > and returning to the step S3. According to the method, the performance failure threshold value of the antifouling coating is taken as a boundary condition, the performance of the antifouling coating is rapidly evaluated, the service life of the antifouling coating is quantitatively predicted, the prediction result is subjected to cooperative cross validation through linkage double models, and the reliability is improved.

The invention discloses antifouling paint as well as a preparation method and application thereof, and belongs to the technical field of functional paint. The coating is prepared from a light-cured polyurethane prepolymer, modified silicon dioxide, a slow-release antifouling microcapsule and a low-surface-energy modifier. The preparation method comprises the following steps: synthesizing acrylated rosin dihydric alcohol, preparing a light-cured polyurethane prepolymer, mixing all the components, spraying, and carrying out ultraviolet curing. The obtained coating has super-hydrophobic, self-repairing and intelligent antifouling functions, is stable in performance in extreme environments such as salt mist, acid-base, ultraviolet aging and mechanical wear, and is suitable for marine equipment such as culture netting and ships. The invention solves the technical problems of toxic pollution and short service life of the traditional antifouling paint, and has obvious environmental friendliness and economic benefit.

The present invention relates to an antifouling coating composition containing a water-dispersed elastomer resin and a hydrophilic silicone oil having an HLB of 6 or more. The present invention also relates to a method for producing the antifouling coating composition, the method comprising mixing a first liquid containing at least a water-dispersed elastomer resin with a second liquid containing at least a hydrophilic silicone oil having an HLB of 6 or more.

The invention discloses a highly-transparent bio-based polyurethane fluoride-free antifouling coating and a preparation method and application thereof.The highly-transparent bio-based polyurethane fluoride-free antifouling coating is prepared by taking tannic acid (TA) as biological polyol, hexamethylene diisocyanate trimer (HDIT) as a cross-linking agent and monohydroxy polydimethylsiloxane (PDMS-OH) as a low-surface-tension material through thermocuring cross-linking, so that the highly-transparent bio-based polyurethane fluoride-free antifouling coating is prepared. And the tannic acid-based polyurethane fluoride-free antifouling coating is prepared. The coating shows up to 99% of optical transparency, has an ultraviolet shielding effect, and has excellent self-cleaning, anti-doodling and anti-artificial fingerprint pollution capabilities, and water, hexadecane, vegetable oil and pump oil easily slide off from the surface without traces. And even if the coating is repeatedly written and erased for 500 times, the coating still keeps excellent anti-graffiti performance. Due to the excellent adhesive force of the TA, the TA can be applied to various base materials. When the coating is bent and folded, the coating is still kept complete, the coating does not crack or peel off, and the coating has a wide application prospect.

The invention discloses a super wear-resistant antifouling paint and a preparation method thereof. The coating comprises the following main components in parts by weight: 40-60 parts of epoxy resin, 4-6 parts of fluorocarbon resin, 12-18 parts of organosilane modified nano hard wear-resistant filler, 4-8 parts of two-dimensional flaky barrier filler, 2-6 parts of an environment-friendly antifouling agent, 10-15 parts of a polyamide curing agent, 1-3 parts of a dispersing agent and 10-20 parts of an environment-friendly solvent. A preparation method of the coating comprises the following steps: (1) preparing materials; (2) premixing; (3) filler modification; (4) adding a filler; (5) adding an antifouling agent; (6) filtering and packaging. The super-wear-resistant antifouling paint disclosed by the invention is excellent in antifouling property, wear resistance and adhesiveness, and is suitable for protecting marine ships and underwater buildings and structures.

The invention provides a marine antifouling coating as well as a preparation method and application thereof. The marine antifouling paint at least comprises transparent marine antifouling resin, nano filler, a solvent and modified cuprous oxide, the transparent marine antifouling resin is prepared from the following raw materials in parts by mass: 250 to 450 parts of silane A, 3 to 50 parts of silane B, 20 to 50 parts of silane C, 10 to 30 parts of silane D, 1 to 50 parts of resin, 300 to 550 parts of solvent, 50 to 150 parts of bactericide, 250 to 350 parts of silica sol, 1 to 30 parts of silicone oil and 20 to 80 parts of pH regulator, the preparation method has the advantages that specific silane and silica sol are adopted for reaction, reaction conditions are controlled, and the marine antifouling resin with excellent adhesive force and durability is prepared; cuprous oxide is subjected to surface modification, so that the durability of the antifouling effect is ensured; the nano material and the modified cuprous oxide powder are added and compounded for use, so that the hydrophobic property and the antifouling effect of the coating are remarkably improved; by adopting the environment-friendly solvent and auxiliaries, the influence of the coating on the environment is reduced.

The invention discloses a polymer composite material based on artemisinin modification, which is characterized in that the polymer composite material comprises organic silicon polyurethane modified by an artemisinin compound and organic silicon polyurea, and the mass ratio of the organic silicon polyurethane modified by the artemisinin compound to the organic silicon polyurea is (2-1): (1-2). The coating is high in hardness, good in mechanical performance, low in elastic modulus, good in stain removal effect and good in adhesion performance, can be stably attached to a substrate and is not prone to falling off, meanwhile, has an excellent antibacterial effect, is not prone to being hydrolyzed by water in seawater or air in the using process on the premise that all the conditions are met, is good in water resistance and can be widely applied to the field of water treatment. Therefore, the long-term stability of the composite coating is ensured, the comprehensive performance of the coating can be comprehensively improved, and the marine antifouling coating serving as an environment-friendly marine antifouling coating has a good application prospect.

The invention discloses organic silicon modified acrylic resin antifouling paint and a preparation method thereof, and particularly relates to the field of chemical paint. The antifouling paint is prepared from the following components in parts by mass: 8 to 12 parts of adamantane acrylate, 5 to 8 parts of trifluoroethyl acrylate, 2 to 3 parts of 2-hydroxyethyl acrylic phosphate, 0.8 to 1.2 parts of tert-butyl peroxypivalate, 4 to 6 parts of tridecafluorooctyltrimethoxysilane, 1 to 2 parts of isophorone diisocyanate, 3 to 6 parts of fluorosilane modified nano TiO2 and 1 to 2 parts of graphene oxide. 20-30 parts of deionized water, 0.5-1 part of a polyether modified polysiloxane defoaming agent, and 0.3-0.5 part of an ultraviolet light absorber UV-327 can be additionally added. The preparation method comprises the following steps: S1, preparing isocyanate modified fluorine-containing organic silicon; s2, preparing a ternary copolymer prepolymer; s3, preparing a modified resin matrix; s4, preparing a fluorosilane modified nano TiO2 / graphene oxide composite filler dispersion liquid; and S5, mixing the resin matrix and the dispersion liquid, and performing stirring and vacuum desolventizing to obtain a finished product. The coating has the characteristics of super-hydrophobicity, high hardness, strong adhesion, long-acting antifouling property, aging resistance and environmental protection.

The invention provides a polyurethane antifouling paint, a preparation method thereof and a polyurethane antifouling coating, and belongs to the technical field of paints. The polyurethane antifouling paint comprises a cross-linkable part and a non-cross-linked resin part, wherein the cross-linkable part comprises a second prepolymer formed by reaction of polyether polyol, dihydroxyl long-chain quaternary ammonium salt and diisocyanate; the non-crosslinked resin part comprises linear or branched chain polyurethane grafted with a sterilizing agent, and the sterilizing agent comprises 3-iodine-2-propynyl-N-n-butyl carbamate. The polyurethane antifouling coating provided by the invention can provide a relatively long-acting antifouling effect in a fresh water environment, the dihydroxyl long-chain quaternary ammonium salt and the bactericide can inactivate protein in contact with the coating, and meanwhile, the reduced free energy on the surface of the polyurethane antifouling coating promotes desorption of surface fouling.

The present invention provides a composition for forming a high-gloss coating film which exhibits good antifouling performance in spite of a relatively slow dissolution rate of the coating film, and which does not cause a coating film abnormality such as a crack even after being immersed in seawater for a long period of time.　The present invention specifically provides an antifouling coating composition which contains a copolymer A, a rosin ester B, and an antifouling agent C, wherein: the copolymer A is a copolymer of a monomer (a1) and an ethylenically unsaturated monomer (a2) other than the monomer (a1); the monomer (a1) is represented by general formula (1); and the rosin ester B is a reaction product of a polyhydric alcohol (b1) and rosin or a derivative thereof (b2).

The invention relates to the field of marine antifouling paint, and particularly discloses marine antifouling paint and a preparation method thereof. The marine antifouling paint is prepared from, by weight, 40%-60% of matrix resin, 10%-15% of solvent, 6%-15% of antifouling agent, 15%-30% of filler, 5%-10% of curing agent, 0.1%-1.0% of defoaming agent, 0.1%-1.0% of dispersing agent and 0.1%-1.0% of flatting agent, and the matrix resin comprises self-polishing resin and tough resin according to the weight ratio of 7: (1-6). The marine antifouling paint provided by the invention has relatively high flexibility, relatively high adhesion strength with a base material, good mechanical properties and a relatively long-lasting relatively high antifouling effect.

The invention provides a composite acrylic acid low-surface-energy antifouling coating, a preparation method and application, and belongs to the technical field of marine antifouling materials, the composite acrylic acid low-surface-energy antifouling coating comprises a three-layer composite structure, the three-layer composite structure comprises a bottom layer, a middle layer and a surface layer from bottom to top, the bottom layer is capsaicin-loaded polymethyl methacrylate, and the middle layer is a polymethyl methacrylate surface layer. The bottom layer is made of capsaicin, the middle layer is made of pressure-sensitive adhesive activated by oxygen plasma, the surface layer is made of dihydroxyl-terminated polydimethylsiloxane, the mass ratio of the bottom layer to the middle layer to the surface layer is (23-25): 1: (23-25), and the mass content of capsaicin in the bottom layer accounts for 5.82-5.75% of the total mass; based on the bonding strength change of the pressure-sensitive adhesive generated by oxygen plasma jet and the capsaicin for effectively inhibiting biological growth, polyacrylic acid is used as a self-polishing reservoir to continuously release an environment-friendly antifouling agent; the pressure-sensitive adhesive adheres to the polydimethylsiloxane layer through the adhesive force change generated by oxygen plasma to achieve the low-surface-energy antifouling effect, synergistic gain is achieved, the composite material intervenes into the biological fouling process from multiple aspects, and the composite material copes with the marine biological fouling process jointly.

The invention provides a biocompatible selective outer membrane of an implantable biosensor and a preparation method of the biocompatible selective outer membrane, and the preparation method comprises the following steps: preparing an outer membrane diluent, and respectively dissolving a PS-P4VP copolymer, NH2-PEG-NH2 and PEGDGE in the outer membrane diluent to obtain a mixed solution; the ratio of PS to P4VP of the PS-P4VP copolymer is (0.5: 9.5)-(3: 7); coating the surface of an enzyme layer of the in-vivo implanted sensor with the mixed solution, and curing for 48-56 hours at normal temperature, so that an amino group of NH2-PEG-NH2 and a pyridine group of P4VP form a dynamic covalent bond to obtain an inner layer; the inner layer is immersed in deionized water for 1.5 h or above, the uncrosslinked PEG derivative is eluted, and a porous inner layer is obtained; and coating the surface of the porous inner layer with a polysulfobetaine solution to obtain the hydrophobic antifouling coating. By adopting the technical scheme, the mechanical strength and the long-term stability are improved.

The invention belongs to the technical field of biological fouling protection, and particularly relates to an environment-friendly adhesive hydrogel antifouling coating which is prepared by the following steps: grafting a catechol group to an acryloyl compound with double bonds through acylation reaction to obtain a dopamine-acrylamide compound; the preparation method comprises the following steps: carrying out copolymerization reaction on an acrylamide derivative and a dopamine-acrylamide compound in a water environment to obtain an acrylamide derivative copolymer; and mixing the chitosan and the acrylamide derivative copolymer to obtain the environment-friendly adhesive hydrogel antifouling coating. According to the invention, polyacrylamide and catechol are introduced into a chitosan system at the same time to form a chitosan-polyacrylamide-catechol ternary synergistic network, and the chitosan-polyacrylamide-catechol ternary synergistic network has the effects of self-repairing, high toughness, strong adhesion and intelligent response.

The invention discloses a preparation method of a light response type lubricating antibacterial antifouling coating based on an N-substituted azo compound. The light response type lubricating antibacterial antifouling paint is mainly prepared by uniformly stirring an N-substituted azo-isocyanate prepolymer and a cyclodextrin modified polyol prepolymer, the N-substituted azo-isocyanate prepolymer is obtained by uniformly mixing dihydroxyl-terminated polydimethylsiloxane, isocyanate, an N-substituted azo compound and an organic tin catalyst in an organic solvent a and then reacting under certain conditions. The N-substituted azo compound serves as a bactericide, the bactericidal performance is remarkably enhanced through the synergistic effect of an N-substituent and an azo group of the N-substituted azo compound, meanwhile, azo serves as a photoresponse object of the coating, cis-isomerism and trans-isomerism changes can be generated under ultraviolet light emission, therefore, the subject-object connection effect with cyclodextrin is changed, movement of lubricating liquid in the coating is regulated and controlled, and the anti-corrosion performance of the coating is improved. The self-supplement of the lubricating liquid on the surface of the coating is realized, the service life of the coating is prolonged, and the antifouling property of the coating is improved.

The invention provides a marine antifouling coating with an active-passive synergistic mechanism and a preparation method thereof.The preparation method comprises the steps that a porous template, ruthenium selenide and absolute ethyl alcohol are mixed and stirred to obtain a mixed solution, and the mixed solution is continuously heated to obtain mixed powder; placing the mixed powder and selenium powder in two crucibles respectively, and placing the crucibles in a tubular furnace for heating and calcining to obtain template-loaded ruthenium selenide; soaking the template-loaded ruthenium selenide in a concentrated alkali solution, heating to remove the porous template, and filtering, washing and drying after etching to obtain porous ruthenium selenide; the preparation method comprises the following steps: dissolving vinyl-terminated polydimethylsiloxane, a photoinitiator and polymercaptopropyl methyl siloxane in cyclohexane to obtain a coating base solution, adding porous ruthenium selenide into the coating base solution, uniformly stirring, carrying out ultrasonic treatment, and carrying out vacuum defoaming to obtain a coating solution; and coating the coating liquid on the surface of a base material, and curing after ultraviolet irradiation to obtain the marine antifouling coating with an active-passive synergistic mechanism.

The invention discloses a marine antifouling and anticorrosive coating with copper ion controllable release and self-repairing functions and a preparation method of the marine antifouling and anticorrosive coating, and belongs to the technical field of marine equipment antifouling and anticorrosive coatings. In order to solve the problems that a traditional copper-based antifouling coating is too fast in initial release of copper ions, poor in antifouling persistence, easy to damage and difficult to give consideration to antifouling and self-repairing performance, the preparation method comprises the following steps: firstly, preparing a KH560 modified nano copper oxide / activated carbon antifouling agent; controllable release of copper ions is achieved through the adsorption effect of activated carbon and interface modification of KH560. Secondly, taking PTMG and TDI as raw materials, and introducing FDME and BMI to construct a self-repairing polyurethane matrix containing reversible covalent bonds and hydrogen bonds; finally, the antifouling agent is introduced into the self-repairing polyurethane matrix according to a specific proportion, and the composite coating is prepared. According to the invention, long-acting controllable release of copper ions and synergistic improvement of self-repairing and corrosion resistance of the coating are realized, and the coating is suitable for long-term protection of marine equipment.

The invention belongs to the technical field of marine antifouling materials, and particularly relates to a marine antifouling polyurethane coating material based on zwitterionic resin and a synthesis method thereof.The synthesis method comprises the steps that the molar ratio R1 of isocyanato to hydroxyl is controlled to be 1.6-2.0, and a polyurethane prepolymer is synthesized through macromolecular polyol and aliphatic or alicyclic diisocyanate; the preparation method comprises the following steps: synthesizing zwitterionic polyol from N-methyldiethanolamine, triethanolamine, acid anhydride, sultone, a bisphenol compound and a polar solvent, then adding a prepolymer diluted by the polar solvent, and controlling the molar ratio of isocyanato hydroxyl to 1.6-2.0 to carry out chain extension so as to introduce a large amount of zwitterionic ions, thereby obtaining the product. The tensile shear strength of the coating is larger than 3.0 MPa, the 180-degree peel strength is larger than 10 N / cm, and the marine coupon antifouling performance score within 24 months is larger than 95. The zwitterionic polyol synthesis route raw materials are low in price and easy to obtain, the zwitterionic polyol is introduced into a polyurethane main chain, no organic or heavy metal ion antifouling agent needs to be added, the main chain contains hydrophilic and hydrophobic soft segment chains, the adhesion of an antifouling coating can be kept in dry and wet environments, and the anti-microbial effect of zwitterionic can be exerted; the marine antifouling paint has remarkable environmental protection and intrinsic long-acting marine antifouling characteristics.

The present invention belongs to the field of coating technology, specifically relating to an insulating antifouling coating and its preparation method. This invention utilizes a fluorenyl-containing diamine and a fluorine-containing dianhydride as raw materials for an imidization reaction, followed by a condensation reaction with trimethoxychlorosilane to produce a modified polyimide resin. This modified polyimide resin is then combined with mica powder, carbon black pigment, magnesium hydroxide, and other raw materials to produce the insulating antifouling coating. This coating effectively improves the material's volume resistivity while maintaining excellent anti-fouling flashover performance.

The invention discloses a preparation method of a solvent-free polyurethane antifouling coating cured in situ at room temperature. The method comprises the following steps: firstly, introducing single-ended dihydroxy polydimethylsiloxane (PDMS) as a low surface energy material into a polyurethane side chain, and then preparing the solvent-free polyurethane by taking gamma-isocyanate propyl triethoxy silane as an end-capping reagent. When the solvent-free polyurethane antifouling coating is applied, a cross-linking agent is added into the solvent-free polyurethane, a base material is coated with the solvent-free polyurethane after uniform mixing, and the solvent-free polyurethane antifouling coating is obtained after curing is conducted for 24 h at the room temperature. The solvent-free polyurethane antifouling coating prepared by the method can be used for antifouling of surfaces of various substrates such as leather, synthetic leather, glass, metal, ceramic, wood and plastic. The antifouling coating not only has good anti-doodling property, self-cleaning property, wear resistance and corrosion resistance, but also has higher transparency and antifouling durability. The solvent-free polyurethane antifouling coating prepared by the technical scheme is suitable for various soft and hard base materials and has a wide application prospect.

The invention belongs to the technical field of functional paint, and particularly relates to antifouling paint for ships and a preparation method of the antifouling paint. The invention aims to solve the problem that the existing ship antifouling paint is difficult to give consideration to both broad-spectrum antifouling effect and environmental safety. The preparation method comprises the following steps: carrying out chain extension polymerization on polycaprolactone polyol and polydimethylsiloxane glycol to obtain a block copolymer; the preparation method comprises the following steps: emulsifying and curing butenolide and polycaprolactone glycol to obtain an antifouling microcapsule, and further carrying out self-assembly crosslinking to obtain a response microcapsule; mixing the dispersing aid, the compound solvent and the functional filler to obtain a compound aid; mixing the dispersing aid, the compound solvent and the functional filler to obtain a compound aid; and performing phase separation and curing on the antifouling paint to obtain the antifouling coating. The anti-fouling paint prepared by the preparation method disclosed by the invention has a remarkable inhibition effect on attachment of fouling organisms while having good aging resistance and corrosion resistance, and is high in environmental safety.

Provided is an anti-icing coating and anti-icing coating film. The anti-icing coating including components (A) to (E): component (A): a coating resin in an amount of 20 to 40% by mass, component (B): a porous filler in an amount of 10 to 30% by mass, component (C): a hydrophobic agent in an amount of 2 to 20% by mass, component (D): a wax with a melting point of 60 to 160° C. in an amount of 1 to 10% by mass, component (E): an organic solvent in an amount of balance. The component (A) can be the following modified polymer, which has: a main chain composed of (a) a fluoropolymer, and side chains based on monomers represented by formulas (b) and (c),CH2═C(—R1)—C(═O)—O—Si(—CH3)2—[O—Si(—CH3)2]n—O—Si(—CH3)2—R2  (b)CH2═C(—R3)—C(═O)—X—Y  (c).Also provided is an anti-fouling coating and anti-fouling coating film. The anti-fouling coating including the above-mentioned modified polymer, a curing agent and an organic solvent.

The invention discloses a preparation method and application of a self-repairing polymer-based intelligent antibacterial antifouling coating. A reactive intelligent antibacterial functional element is introduced into an organic silicon polymer main chain, the coating is endowed with an on-demand antibacterial function, in the presence of bacteria, antibacterial molecules are protonized, the antibacterial molecules embedded in an inner cavity of cyclodextrin are changed into a separated state, and an efficient antibacterial mode is shown. Under the synergistic effect of antibacterial molecules and low surface energy of organic silicon, the antibacterial rate on escherichia coli can reach 99% or above, and the antibacterial rate on staphylococcus aureus can reach 98% or above. Besides, the self-repairing cross-linking agent is utilized, dynamic covalent bonds and multiple hydrogen bonds are introduced into a polymer network, the coating is endowed with excellent self-repairing capacity, and the repairing efficiency can reach 90% or above. The antibacterial coating prepared by the method has excellent antifouling and antibacterial properties and self-healing capability, can be widely applied to the fields of medical instruments, marine antifouling, food packaging and the like, and greatly prolongs the service life and improves the safety of the material.